Shopping cart holder



FIG. 1 is a right side elevational view of a shopping cart holder showing my new design;

FIG. 2 is a front elevational view;

FIG. 3 is a rear elevational view;

FIG. 4 is a bottom plan view;

FIG. 5 is a top plan view; and

FIG. 6 is a front and left side perspective view thereof on a slightly enlarged scale. 

The ornamental design for a shopping cart holder, as shown and described. 